{"title":"Clinical diagnostic value and potential regulatory mechanisms of lncRNA NOP14-AS1 in chronic kidney disease.","authors":"Hongfang Jiang, Huajuan Shen, Xiujun Xu, Yanna Liu, Yongze Dong, Jiaxiang Jiang","doi":"10.1080/15257770.2025.2456794","DOIUrl":"https://doi.org/10.1080/15257770.2025.2456794","url":null,"abstract":"<p><p>In the early stages, chronic kidney disease (CKD) can be asymptomatic, marking diagnosis difficult. This study aimed to investigate the diagnostic role and potential regulatory mechanisms of nucleolar protein 14 (NOP14) -antisense RNA 1 (AS1) in patients with CKD. Herein, 68 patients with CKD, 65 patients with CKD undergoing peridialysis, and 80 healthy adults were included. The real-time reverse transcription-quantitative polymerase chain reaction was performed to assess NOP14-AS1 levels, and its diagnostic value was evaluated using receiver operating characteristic curves. Additionally, cell proliferation and apoptosis were assessed by Cell Counting Kit-8 assay. and flow cytometry, respectively. Oxidative stress levels were determined using superoxide dismutase and malondialdehyde MDA kits, and the dual-luciferase reporter assay was performed to determine the relationship between NOP14-AS1 and microRNA-326 (miR-326) target binding. Lastly, the potential mechanism underlying miR-326 target gene regulation in CKD progression were explored utilizing Gene Ontology and Kyoto Encyclopedia of Genes and Genomes databases. Notably, patients with CKD exhibited decreasedNOP14-AS1 levels and upregulated miR-326 levels. NOP14-AS1 and miR-326 exhibited combined effects on cell proliferation, apoptosis, inflammatory factors, and oxidative stress levels. Furthermore, the target genes of miR-326 showed enrichment in CKD-associated rat sarcoma and phosphoinositide 3-kinase protein kinase B pathways. Altogether, the findings of this study show the potential of NOP14-AS1 as a diagnostic marker in CKD. Overall, NOP14-AS1 regulates the miR-326 expression, which, in turn, regulates various miR-326 target gene-associated signaling pathways, thereby affecting the occurrence and development of CKD.</p>","PeriodicalId":19343,"journal":{"name":"Nucleosides, Nucleotides & Nucleic Acids","volume":" ","pages":"1-18"},"PeriodicalIF":1.1,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143040000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M Manjunath, F H Sujata, A H Shridhara, B Vinay Kumar, K Prashantha, K Yogendra, N Madhusudhana
{"title":"Sustainable synthesis of benzimidazole-based Schiff base using reusable CaAl<sub>2</sub>O<sub>4</sub> nanophosphors catalyst: Insights into metal(II) complexes and DNA interactions.","authors":"M Manjunath, F H Sujata, A H Shridhara, B Vinay Kumar, K Prashantha, K Yogendra, N Madhusudhana","doi":"10.1080/15257770.2025.2451375","DOIUrl":"https://doi.org/10.1080/15257770.2025.2451375","url":null,"abstract":"<p><p>This article presents a new and facile method for the synthesis of Schiff base compounds with a benzimidazole group using a low-cost and reusable calcium aluminate nanophosphorus catalyst (CaAl<sub>2</sub>O<sub>4</sub>). This approach avoids harmful solvents and reactants, supporting a more environmentally friendly synthesis process. The catalyst maintained its activity and heterogeneity over four cycles with minimal loss of efficiency. The synthesis process was straightforward and eliminated the need for column chromatography. The Schiff base ligand (HL=(<i>E</i>)-<i>N</i>-((6-(thiophen-2-yl)pyridin-2-yl)methylene)-1H-benzo[<i>d</i>]imidazol-2-amine)) was synthesized by the reaction of 6-(thiophen-2-yl)pyridine-2-carbaldehyde with 1<i>H</i>-benzimidazole-2-amine. Subsequently, metal(II) complexes of Co(II), Ni(II), and Cu(II) were prepared using this ligand. Structural analysis of both the ligand and its metal complexes was carried out using various physicochemical and spectroscopic methods. Ni(II) and Co(II) complexes were found to adopt an octahedral geometry, while the Cu(II) complex exhibited a square-planar structure. Binding studies with calf thymus DNA (CT-DNA) at pH 7.2 were performed using UV-visible spectroscopy, viscosity measurements, and thermal denaturation studies and showed that the metal complexes intercalate into the DNA and produced a distinct binding pattern. Molecular docking simulations with AutoDock Vina provided insights into the interaction of these complexes with the B-DNA dodecamer. Furthermore, the ligand and its metal complexes showed UV-visible photonuclease activity against pUC19 DNA. Agarose gel electrophoresis showed that the metal complexes exhibit photoinduced nuclease activity, confirming their ability to cleave DNA upon exposure to light.</p>","PeriodicalId":19343,"journal":{"name":"Nucleosides, Nucleotides & Nucleic Acids","volume":" ","pages":"1-23"},"PeriodicalIF":1.1,"publicationDate":"2025-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143008035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Payam Amiri Dashatan, Huseyin Soylu, Mehmet Elbistan, Aysegul Atmaca, Adem Keskin, Zulfinaz Betul Celik, Serbulent Yigit
{"title":"Evaluation of ACE I/D and ATIR A1166C variants in patients with diabetes mellitus with and without peripheral neuropathy in Turkish patients.","authors":"Payam Amiri Dashatan, Huseyin Soylu, Mehmet Elbistan, Aysegul Atmaca, Adem Keskin, Zulfinaz Betul Celik, Serbulent Yigit","doi":"10.1080/15257770.2025.2451382","DOIUrl":"https://doi.org/10.1080/15257770.2025.2451382","url":null,"abstract":"<p><strong>Objective: </strong>Type 2 Diabetes Mellitus (T2DM) can lead to long-term vascular complications such as diabetic peripheral neuropathy (DPN). This study aimed to investigate the role of angiotensin-converting enzyme (ACE) insertion (I)/deletion (D) and angiotensin II type 1 receptor (AT1R) A1166C variants in the predisposition to T2DM in the Turkish population and their association with DPN.</p><p><strong>Methods: </strong>The study included 90 T2DM patients (42 with DPN) and 50 healthy individuals. ACE I/D and ATIR A1166C gene regions were analyzed for the variant. Both the general genotype distribution of these variants and the observed genotype ratios were examined separately.</p><p><strong>Results: </strong>In the T2DM group, the proportion of individuals with the AA genotype of the AT1R A1166C variant was lower than in the control group, and the proportion of individuals with the AC genotype was higher. There was no significant difference in the genotype distribution between the groups for the ACE I/D variant. There was no significant difference in the genotype distribution of the ACE I/D and ATIR A1166C variants in patients with and without DPN.</p><p><strong>Conclusion: </strong>In the Turkish population, no significant difference was observed in the overall genotype distribution of ACE I/D and AT1R A1166C variants between T2DM patients and healthy individuals, whereas the AC genotype of the AT1R A1166C variant was more frequent in T2DM patients, and the AA genotype was less frequent. For both variants, no significant difference was observed in the genotype distribution between T2DM patients with and without DPN.</p>","PeriodicalId":19343,"journal":{"name":"Nucleosides, Nucleotides & Nucleic Acids","volume":" ","pages":"1-10"},"PeriodicalIF":1.1,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143007835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tuward J Dweh, Glay Jr Eric Wulu, John Kessellie Jallah, Dominic L Miller, Jyoti Prakash Sahoo
{"title":"Innovations in RNA therapeutics: a review of recent advances and emerging technologies.","authors":"Tuward J Dweh, Glay Jr Eric Wulu, John Kessellie Jallah, Dominic L Miller, Jyoti Prakash Sahoo","doi":"10.1080/15257770.2025.2451377","DOIUrl":"https://doi.org/10.1080/15257770.2025.2451377","url":null,"abstract":"<p><p>The field of biomedical science has witnessed another milestone with the advent of RNA-based therapeutics. This review explores three major RNA molecules, namely: messenger RNA (mRNA), RNA interference technology (RNAi), and Antisense Oligonucleotide (ASO), and analyses U.S. Food and Drug Administration drugs from 14 RNA-based pharmaceutical companies in terms of targeted genes, diseases and types, clinical trials and status, the mode of delivery, and the year of production. Many of such drugs are clinically approved or pending approval by the U.S. Food and Drug Administration (FDA) alongside other leading drugs agencies. Regarding diseases, this article emphasizes cancer therapy, genetic diseases, viral infections, and two categories of drug delivery systems include viral vectors and nanoparticles. Despite the tremendous progress made, key issues associated with these delivery systems are stability, off-target activities of RNA payloads, efficiency in cellular uptake, and the innovative need for engineering techniques for modifications. This review emphasizes the transformative potential of RNA therapeutics and the role of innovative technologies in addressing clinical needs, paving the way for a new era in precision medicine.</p>","PeriodicalId":19343,"journal":{"name":"Nucleosides, Nucleotides & Nucleic Acids","volume":" ","pages":"1-25"},"PeriodicalIF":1.1,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142971667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Raissa Sultana, Eline Darjinoff, Hamza Qureshi, Liqun Qiu, Jonathon Roepke, Hongbin Yan
{"title":"Desalting of oligonucleotides through precipitation for mass spectrometric analysis.","authors":"Raissa Sultana, Eline Darjinoff, Hamza Qureshi, Liqun Qiu, Jonathon Roepke, Hongbin Yan","doi":"10.1080/15257770.2025.2452387","DOIUrl":"https://doi.org/10.1080/15257770.2025.2452387","url":null,"abstract":"<p><p>Contamination of sodium ions in oligonucleotides often causes issues in mass spectrometric analysis. This study investigated the efficiency of the combination of ammonium acetate and alcohol in desalting oligonucleotides. It was found that oligonucleotide samples containing up to 4 M NaCl can be effectively desalted through precipitation with ethanol or isopropanol in the presence of 1 or 5 M ammonium acetate. The level of sodium ions was reduced by 2-3 orders of magnitude as determined by atomic emission spectroscopy. The desalted samples were successfully analyzed by direct-infusion electrospray ionization mass spectrometry.</p>","PeriodicalId":19343,"journal":{"name":"Nucleosides, Nucleotides & Nucleic Acids","volume":" ","pages":"1-8"},"PeriodicalIF":1.1,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142971747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Knockdown of miR-182 changes the sensitivity of triple-negative breast cancer cells to cisplatin.","authors":"Hülya Dönmez, Bahadır Batar, Burhan Turgut","doi":"10.1080/15257770.2025.2451818","DOIUrl":"https://doi.org/10.1080/15257770.2025.2451818","url":null,"abstract":"<p><p>Breast cancer is the most common malignancy that affects women. MicroRNAs (miRNAs) play an essential role in cancer therapy and regulate many biological processes such as cisplatin resistance. The study's objective was to determine whether miR-182 dysregulation was the cause of cisplatin resistance in TNBC cell line MDA-MB-231. To determine the expression of miR-182, PCR was performed with primers specific to miR-182, and agarose gel electrophoresis was performed. To reduce the expression of miR-182 in MDA-MB-231 cells, anti-miR-182 oligonucleotides were used. RT-qPCR was used to confirm knockdown. The knockdown and control groups were treated with cisplatin at the same time. Propidium iodide (PI) and Annexin V staining were performed for apoptosis assay. Flow cytometric analysis was used to investigate the effect of miR-182 knockdown on cell cycle arrest. In comparison to untreated control MDA-MB-231 cells with MDA-MB-231 cells treated with anti-miR-182, there was a significant increase in the cisplatin-induced early apoptosis phase (<i>p</i> = 0.023). Also, inhibition of miR-182 significantly increased the cell cycle arrest at the G2/M phase in MDA-MB-231 cells (<i>p</i> = 0.031). Our results revealed that miR-182 inhibition may play a role in the overcoming of cisplatin resistance by inducing apoptosis and, cell cycle arrest in TNBC.</p>","PeriodicalId":19343,"journal":{"name":"Nucleosides, Nucleotides & Nucleic Acids","volume":" ","pages":"1-15"},"PeriodicalIF":1.1,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142966203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The role of miRNA134 in pathogenesis and treatment of intractable epilepsy: a review article.","authors":"Maniya Kasaiyan, Mohsen Basiri, Sara Pajouhanfar","doi":"10.1080/15257770.2024.2331046","DOIUrl":"10.1080/15257770.2024.2331046","url":null,"abstract":"<p><p>MicroRNA-134 (miRNA134) has emerged as a critical regulator in the pathogenesis of epilepsy, particularly in intractable cases resistant to conventional therapies. This review explores the multifaceted roles of miRNA134 in epileptogenesis, focusing on its influence on dendritic spine morphology and synaptic plasticity. Through its interactions with proteins such as LIM kinase 1 (LIMK1), Pumilio 2 (PUM2), and Tubby-like protein 1 (TULP1), miRNA134 modulates various molecular pathways implicated in epilepsy development. Preclinical studies have shown pro-mising results in targeting miRNA134 for mitigating seizure activity, highlighting its potential as a therapeutic target. Furthermore, miRNA134 holds promise as a biomarker for epilepsy diagnosis and prognosis, offering opportunities for personalized treatment approaches. However, further research is warranted to elucidate the precise mechanisms underlying miRNA134's effects and to translate these findings into clinical applications.</p>","PeriodicalId":19343,"journal":{"name":"Nucleosides, Nucleotides & Nucleic Acids","volume":" ","pages":"222-237"},"PeriodicalIF":1.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140294077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ayşe Hümeyra Taşkın Kafa, Rukiye Aslan, Sevgi Durna Daştan, Cem Çeli K, Mürşit Hasbek, Ayşenur Emi Noğlu
{"title":"Molecular diversity of <i>Klebsiella pneumoniae</i> clinical isolates: antimicrobial resistance, virulence, and biofilm formation.","authors":"Ayşe Hümeyra Taşkın Kafa, Rukiye Aslan, Sevgi Durna Daştan, Cem Çeli K, Mürşit Hasbek, Ayşenur Emi Noğlu","doi":"10.1080/15257770.2024.2344741","DOIUrl":"10.1080/15257770.2024.2344741","url":null,"abstract":"<p><p>One of the mechanisms responsible for antibiotic resistance in <i>Klebsiella pneumoniae</i> is the enzymes produced by the bacteria; another important mechanism is the ability to form biofilm. In this study, antibiotic resistance, genes associated with virulence, and biofilm-forming properties of <i>K. pneumoniae</i> strains were investigated. A total of 100 <i>K. pneumoniae</i> isolates were obtained from different clinical samples identified by Matrix-Assisted Laser Desorption/Ionization time-of-flight Mass Spectrometry. Antimicrobial susceptibility testing was performed with the Phoenix 100 apparatus. The biofilm forming properties of strains were determined by the microtiter plate method. For molecular analysis, genes encoding the carbapenemase enzyme (<i>bla</i><sub>OXA-48</sub>, <i>bla</i><sub>NDM-1</sub>, <i>bla</i><sub>IMP</sub>, and <i>bla</i><sub>VIM</sub>) and biofilm-related genes (<i>tre</i>C, <i>lux</i>S, <i>mrk</i>A, and <i>wza</i>) were investigated by polymerase chain reaction (PCR). While 76% of clinical isolates were resistant to three or more antimicrobials, 24% were classified as non-multidrug resistant (non-MDR). When biofilm-forming capacities of clinical isolates were tested, it was determined that the resistant-isolates produced 59.2% strong biofilm, and susceptible-isolates produced 12.5% strong biofilm. According to PCR results, carbapenemase genes were determined as follows: <i>bla</i><sub>OXA-48</sub>-70%, <i>bla</i><sub>NDM</sub>-49%, and <i>bla</i><sub>KPC</sub>-19%, <i>bla</i><sub>OXA-48</sub>/<i>bla</i><sub>NDM</sub>/<i>bla</i><sub>KPC</sub>-12%, <i>bla</i><sub>OXA-48</sub>/<i>bla</i><sub>NDM</sub>-26%, and <i>bla</i><sub>OXA-48</sub>/<i>bla</i><sub>KPC</sub>-4%. The biofilm-associated genes in bacterial isolates were determined as follows: <i>lux</i>S-98%, <i>tre</i>C-94%, <i>mrk</i>A-88%, and <i>wza</i>-15%. In addition, Hierarchical Clustering Tree and Heatmap analysis revealed an association between isolates that lacks resistance genes and isolates lacks biofilm-formation related genes that were included in MDR or non-MDR classes. As a result, biofilm should be considered in the treatment of MDR infections, and therapy should be planned accordingly. In addition, pursuing the data and genes of antibiotic resistance is significant for combating resistance.</p>","PeriodicalId":19343,"journal":{"name":"Nucleosides, Nucleotides & Nucleic Acids","volume":" ","pages":"361-377"},"PeriodicalIF":1.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140890611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Identification of lung adenocarcinoma subtypes based on mitochondrial energy metabolism-related genes.","authors":"Jianyang Ding, Keng Chen, Xuhui Wu","doi":"10.1080/15257770.2024.2369093","DOIUrl":"10.1080/15257770.2024.2369093","url":null,"abstract":"<p><strong>Background: </strong>Identifying subtypes of lung adenocarcinoma (LUAD) patients based on mitochondrial energy metabolism and immunotherapy sensitivity is essential for precision cancer treatment.</p><p><strong>Methods: </strong>LUAD subtypes were identified using unsupervised consensus clustering, and results were subjected to immune and tumor mutation analyses. DEGs between subtypes were identified by differential analysis. Functional enrichment and PPI network analyses were conducted. Patients were classified into high and low expression groups based on the expression of the top 10 hub genes, and survival analysis was performed. Drugs sensitive to feature genes were screened based on the correlation between hub gene expression and drug IC<sub>50</sub> value. qRT-PCR and western blot were used for gene expression detection, and CCK-8 and flow cytometry were for cell viability and apoptosis analysis.</p><p><strong>Results: </strong>Cluster-1 had significantly higher overall survival and a higher degree of immunoinfiltration and immunophenotypic score, but a lower TIDE score, DEPTH score, and TMB. Enrichment analysis showed that pathways and functions of DEGs between two clusters were mainly related to the interaction of receptor ligands with intracellular proteases. High expression of hub genes corresponded to lower patient survival rates. The predicted drugs with high sensitivity to feature genes were CDK1: Ribavirin (0.476), CCNB2: Hydroxyurea (0.474), Chelerythrine (0.470), and KIF11: Ribavirin (0.471). KIF11 and CCNB2 were highly expressed in LUAD cells and promoted cell viability and inhibited cell apoptosis.</p><p><strong>Conclusion: </strong>This study identified two subtypes of LUAD, with cluster-1 being more suitable for immunotherapy. These results provided a reference for the development of precision immunotherapy for LUAD patients.</p>","PeriodicalId":19343,"journal":{"name":"Nucleosides, Nucleotides & Nucleic Acids","volume":" ","pages":"568-586"},"PeriodicalIF":1.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141451047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Taguchi method for optimization of Cr(VI) removal, isotherm, kinetic and thermodynamic studies.","authors":"Sabrina Aziri, Smail Meziane, Hakima Bozetine, Nabila Berkane","doi":"10.1080/15257770.2024.2308517","DOIUrl":"10.1080/15257770.2024.2308517","url":null,"abstract":"<p><p>In this study, Taguchi optimization method was applied to determine the optimum operating conditions for batch adsorption of Cr(VI) from aqueous solution. Initial pH of solution, adsorbent dose, initial hexavalent chromium concentration, contact time and adsorbent type were selected as the variables, and the removal efficiency of Cr(VI) was chosen for the designated response. L<sub>18</sub>(3<sup>5</sup>) orthogonal array, signal-to-noise (S/N) ratio and analysis of variance statistical procedures were applied to identify the effect of each operating parameter on the removal of Cr(VI) from aqueous solution. The signal-to-noise (S/N) ratio results showed that the optimal combination for Cr(VI) removal was at pH 1.0, adsorbent dose of 3.6 g.L<sup>-1</sup>, Cr(VI) concentration of 30 mg.L<sup>-1</sup>, contact time of 95 min and olive leaves as adsorbent type. A removal of 95.09% was obtained at these optimum conditions. The analysis of variance of the data revealed that initial pH of solution was the most dominant parameter affecting Cr(VI) removal efficiency, followed by adsorbent type, adsorbent dose, contact time and initial metal concentration. Under optimal conditions, adsorption kinetic of Cr(VI) was studied and modeled using the pseudo first-order, pseudo-second-order and intraparticle diffusion models. It was found that the pseudo-second-order model fitted the adsorption data most with the highest determination coefficient (R<sup>2</sup> = 0.996). Freundlich isotherm model, with regression coefficient R<sup>2</sup> of 0.953, fit well with the equilibrium isotherm data. The Langmuir maximum adsorption capacity was found to be 62.5 mg.g<sup>-1</sup>. The experimental values of ΔH°, ΔG° and ΔS° revealed that the adsorption process was spontaneous and endothermic.</p>","PeriodicalId":19343,"journal":{"name":"Nucleosides, Nucleotides & Nucleic Acids","volume":" ","pages":"16-40"},"PeriodicalIF":1.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139697985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}